Oliver R G, Pal A D
Department of Child Dental Health, University of Wales College of Medicine, Cardiff, United Kingdom.
Am J Orthod Dentofacial Orthop. 1989 Jul;96(1):65-71. doi: 10.1016/0889-5406(89)90231-x.
The effects of three different methods of bracket removal on the dimensions of the arch wire slot of edgewise brackets were examined. Gross distortion (visible to the naked eye) and microscopic distortion were found for all three methods. Gross bracket distortion was found infrequently with one method. At a microscopic level, all methods produced approximately equal levels of distortion, principally an increase in vertical slot dimensions. The implications of these findings for recycling brackets are discussed.
研究了三种不同的托槽去除方法对方丝弓托槽弓丝槽尺寸的影响。所有三种方法均发现有明显变形（肉眼可见）和微观变形。有一种方法很少出现明显的托槽变形。在微观层面，所有方法产生的变形程度大致相同，主要是垂直槽尺寸增加。讨论了这些发现对托槽回收利用的影响。
